Emma Watson and Kelly Clarkson May Have Been Targeted by 'Smallville' Actress Allison Mack for Alleged Sex Cult

Did actress Allison Mack try to recruit celebrities such as Emma Watson and Kelly Clarkson to an alleged sex cult?

Mack, who appeared in "Smallville," was arrested Friday for allegedly recruiting woman as sex "slaves" to service the leader of a group to which she belonged, according to prosecutors. The group, called NXIVM (Nexium), is based in Albany, N.Y.

The 35-year-old pleaded not guilty in Brooklyn federal court to charges of sex trafficking and forced labor. Alleged cult leader Keith Raniere faces similar charges and has also pleaded not guilty.

In a statement Friday, U.S. Attorney Richard P. Donoghue said that Mack recruited women for Raniere, and that the women were “exploited, both sexually and for their labor."

Mack may have tried to entice "Harry Potter" actress Watson, and "The Voice"judge Clarkson, according to some recently unearthed tweets.